linux-kernel - Re: [patch 1/2] mm: vmscan: fix force-scanning small targets without swap

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Message-Id: <20110817101208.c8bbed4a.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 17 Aug 2011 10:12:08 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Johannes Weiner <jweiner@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.cz>,
	Ying Han <yinghan@...gle.com>,
	Balbir Singh <bsingharora@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Mel Gorman <mel@....ul.ie>
Subject: Re: [patch 1/2] mm: vmscan: fix force-scanning small targets
 without swap

On Thu, 11 Aug 2011 22:31:54 +0200
Johannes Weiner <jweiner@...hat.com> wrote:

> Without swap, anonymous pages are not scanned.  As such, they should
> not count when considering force-scanning a small target if there is
> no swap.
> 
> Otherwise, targets are not force-scanned even when their effective
> scan number is zero and the other conditions--kswapd/memcg--apply.
> 
> Signed-off-by: Johannes Weiner <jweiner@...hat.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Michal Hocko <mhocko@...e.cz>
> Cc: Ying Han <yinghan@...gle.com>
> Cc: Balbir Singh <bsingharora@...il.com>
> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: Daisuke Nishimura <nishimura@....nes.nec.co.jp>
> Cc: Mel Gorman <mel@....ul.ie>

Thanks,
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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